attoDRY2100

cryogen free 1.65 K cryostat with optional superconducting magnet

Our range of toploading, dry, low vibration cryostats has been further extended by the attoDRY2100. It offers a continuous base temperature of 1.65 K, a automated temperature & magnetic field control from 1.65 K to 300 K and your choice of superconducting magnet.

The integrated touchscreen allows for conveniently setting the desired field (B) and temperature (T) without even using a PC. More elaborate measurement schemes such as programmable sweeps of B and T are easily possible via a USB connection and a LabVIEW interface. The temperature stability was measured to be better than ±5 mK at 1.5 K over 10 hours. The toploading design enables quick and easy sample exchange, while offering a generous sample space of 49.7 mm in diameter.

The unmatched cooling performance via exchange gas coupling provides an initial cooldown time of the complete system of around 15-20 hours, while the turn-around time during sample exchange is around 5-8 hours.

Last but not least, the attoDRY2100 was specifically designed to provide an ultra-low vibration measurement platform for cryogenic scanning probe experiments without the need for liquid helium. Due to a proprietary design, mechanical vibrations created by the pulse-tube coldhead are decoupled from the measurement platform. When measured with the attoAFM I, vibration amplitudes of less than 0.15 nm RMS are routinely achieved (bandwidth of 200 Hz, vertical direction)*.

COMPATIBLE MICROSCOPE SYSTEMS

We are absolutely happy with the cooling performance of the attoDRY2100, both concerning base temperature as well as duration to cool it down from room temperature! Therefore, many thanks for developing such a great system!

(Experimental Semiconductor Physics group, TU Munich)

TEMPERATURE STABILITY

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21st Century User Interface

touchscreen control of field & temperature

Via the integrated 4.3“ capacitive touchscreen, the attoDRY1100&2100 cryostats provide a convenient and intuitive interface for a state-of-theart user experience. The desired sample temperature T and magnetic field B can be set easily by virtually pressing a button directly at the cryostat, enabling a true set-and-forget type of operation. Of course, more elaborate measurement schemes such as programmable sweeps of T and B are also possible via the USB interface and LabVIEW®.

Sample Exchange

...cooling down samples has never been that easy

CFM base kit for magneto-optics

attoDRY1000/1100/2100

While many researchers opt for a complete and carefree system solution, others prefer to work on the basis of their own vast experience with homebuilt setups. The latter involves a substantial investment into development time within the research group, but adds to the flexibility of the setup and of course does save the researcher some costs initially.

It is for this reason that attocube also offers CFM base kits for the experts, based on our proven optics components. Instead of a fully tested complete setup, the customer receives the components of his choice for building his own dream setup.

Combine a basic measurement insert in our patented design with the wiring of your choice, the world‘s only low temperature compatible apochromatic objectives, and our patented nanopositioners with a sample holder to kick-start your laboratory!

This base kit approach allows to equip each attoDRY cryostat with several different optical inserts, each one optimized for a specific experiment. Or, put differently, one insert per researcher!

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Optical breadboard add-on

attocube's breadboard add-on offers easy access for challenging optical experiments conducted in cryogenic temperatures and high magnetic fields. Various components can be mounted onto an optical platform, which can be directly attached to any of attocube's top-loading cryostats (attoDRY1000/1100/2100). The elaborated design enables a seamless integration of plattform and cryostat thus offering maximum stability for free-beam experiments.

breadboard drawer 500 mm x 475 mm x 12.7 mm

metric holes (M6 threads on 25 mm centers)

mounting kit for base plate of removable drawer

CUSTOMER FEEDBACK

Dr. Pascale Senellart

We wanted to modify our cryogenic in-situ lithography setup to a dry cryogenic technology. This setup is our most demanding one, requiring sophisticated multicolor optical alignment and long term stability. attocube's new breadbord add-on to the attoDRY1000 offers great flexibility to our measurements: it provides enough space for three different excitation lines, a camera visualization, and still we can easily add additional optical components like polarization control, etc. Everything worked perfectly well right after installation and we could immediately start again our most demanding resonant fluorescence measurements. The optical stability is even better than before!

Investigating samples at variable temperatures and magnetic fields is a common task in physics and materials science. Using the attoDRY2100, a closed-cycle cryostat with superconducting magnet, researchers can easily access the whole phase space of temperature between 1.65 K and 300 K as well as magnetic field, usually -9 Tesla to +9 Tesla (others on request) without compromises on performance. The cooldown time of an insert is about 3 .. 5 hours.

The attoDRY2100 is not only capable of reaching the full magnetic field even at 300 K sample temperature with an excellent temperature stability (10 mK), but also features the possibility of field cooling a sample. The whole temperature and magnetic field control is automated, accessible via the integrated touchscreen or remotely via LabVIEW or a dll.

In the measurements shown to the left, the attoDRY2100 with an atto3DR transport measurement insert was first set to a target sample temperature of 300 K, and then the magnetic field was ramped up from zero Tesla all the way to the full 9 Tesla. This took about 40 minutes. During this process, the sample temperature was stable to within sigma = 23 mK. At 9 T and 300 K, the temperature stability was even better at sigma = 10 mK over more than 6 hours. Subsequently, the sample was field cooled at 9 T back down to base temperature, which took about 3.5 hours.